Elevator.



3 0 9 1 9 2 G E D D E T N E T A T K S m IR 0 mu m L E & Am 9 4 1 8 4 7 NAPPLICATION FILED SEPT. 9, 1903.

J11 we 111 'o\S I? MWA Patented December 29, 1903.

UNITED STATES PATENT OFFICE.

AUGUST WINIARSKI AND TEODOR E. WINIARSKI, OF CIIICAGO, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 748,449, dated December29, 1903.

. Application filed September 9, 1903. Eerial No. 172,438. (No model.)

.To all whom it may concern.-

Be it known that we, Anensr WINIARSKI and TEODOR E. WINIARSKI, citizensof the United States,and residents of Chicago,in the county of Cook andState of Illinois, have invented certain new and useful Improvements inElevators, of which the following'is a specification. A

The object of this invention is to minimize the danger incident to theoperation of elevators by providing a safety appliance that will preventthe fall of the elevator in case the main supportingcables become brokenor loosened, which will be certain and instantaneous in its operationand at the same time not involved or complicated to an unnecessarydegree; and the invention consists in the features of construction andcombination of parts hereinafter described and claimed.

In the drawings illustrating the'invention, Figure 1 is a section of anelevator-shaft, showing the elevator of this invention in normalposition; Fig. 2, a similar view showing the main cable broken and thesafety-clutch mechanism set; Fig. 3, a top view of the elevator of thisinvention; Fig. 4., a cross-sectional View taken on linet 4: of Fig. 2,and Fig. 5 a detail of the supporting head or block.

As shown, the elevator is arranged to travel in a shaft provided withguides A of any usual and well-known form, and between the guides arearranged a series of upwardly-projecting teeth a, extending throughoutpractically the entire length of the elevator-shaft. The elevatorproper, which is arranged to travel in the guides,consists of an outerframe B, consisting of a top cross bar or timber b, a bottom cross baror timber b, and side bars or rails b each side bar or rail beingprovided with a longitudinally extending tongue b adapted to travel inthe guideways between the oppositely arranged notches or teeth thereinwithout having its travel interfered with by the teeth. Within the outerframe is arranged the elevator-cage proper, O, which consists of a topcross bar or rail 0, a floor c, and side rails 0 each of the side railsbeing provided with outwardlyextending ears or flanges 0 which contacttheside faces of the side rails of the outer frame, adapting the innercage to travel up and down Within the outer frame independently of themovement thereof.

To the inner faces of the outer side rails are attached stop-blocks D,against which the top of the cage, normally abuts, and through thestop-blocks and the side rails of the outer frame project catch-arms d,each of the arms being pivoted to one of the stopblocks by means ofpivot-pins d, and, as is shown in Fig. 1, when the elevator is-in normalposition the catch-arms will converge upwardly and cross each other attheir inner vice (not shown) at the top of the shaft,

which cable is attached to a bolt f, extending upwardly from thesupporting-head, and under ordinary conditions the upper edge of thesupporting-head will abut against the under face of the cross-bar of theouter frame and the upper cross-bar of the cage will abut against thestop-blocks D, in which position the cage supports the outer frame andallows the latter to travel up and down the elevator-shaft. An auxiliarycable G is attached to a suitable book 9 on the outer frame and runsover a pulley at the top of the shaft and has a counterbalancing-weightor similar device (not shown) on its free end, and the function of thisauxiliary cable Will hereinafter appear.

In case the main supporting-cable breaks the entire weight of theelevator will be thrown upon the auxiliary cable, which, however, is notintended to support a great weight, but which momentarily serves tocheck the descent of the outer frame, allowing the cage to fall Withinthe outer frame, as shown in Fig. 2, which fall causes the pivoted armsto be drawn down in the center and assume a horizontal position, asshown in Fig. 2, in which position their outer or catch ends will bethrust outwardly in the teeth between the guides of the shaft, therebychecking the descent of the elevator and supporting the inner cagewithin the outer frame rather than vice versa.

It will thus be seen that the device is simple in construction and thatits operation is dependent entirely upon the force of gravity and thethreatened descent of the elevator if the tension has been released fromthe main cable which normally supports the elevator.

What we regard as new, and desire to secure by Letters Patent, is-

An elevator adapted to travel within a guideway provided with teeth,consisting of an outer frame adapted to travel in the guideway, an innercage normally supported by a main elevator-cable above the bottom of theouter frame, a main supporting-cable connected with the inner cage andadapted to support the inner cage above the bottom of as described.

the outer frame, arms normally converging upwardly and pivoted to theouter frame near their outer or catch ends, a supporting-head connectedwith the inner cage and provided with a slot through which the innerends of the converging catch-arms project and within which said ends areheld and adapted to slide for allowing the inner ends to be moveddownwardly by the downward movement of the inner cage and have theirouter or catch ends thrust outwardly by such movement to engage theteeth in the guideway, and an auxiliary cable connecting with the outerframe for arresting the movement of the outer frame and allowing theinner cage to drop therein to pull down the inner ends of the catch-armsand set the catch mechanism, substantially AUGUST WINIARSKI. TEODOR E.WINIARSKI. Witnesses:

OSCAR W. Bonn,

SAMUEL W. BANNING.

